Method and apparatus for shaping hot-metal blanks



Patented May 2, 1922;

IN VEN TOR www v ad@ n.. n L l. I /WE ul/ f/nmeys A W. H. MORGAN. METHOD AND APPARATUS I" OR SHAPINGv HOT METAL BLANKS.

APPLICATION FILED )UNE T3. l9l9.

WILLAM HENRY MOB/GAN, ALLIANCE, OHIO.

METHOD AND .APPARATUS IEORSHAPING HOT-METAL BLANES.

Specification of Letterslatent. `Igrgeni-.Qaj mgry 2,1922,

Application filed June 13, 1919. Serial No. 3( ).3,81`4.`

in the artto which it appertains: to make and use the same. A

My invention relates to an improvement in method and apparatus for shaping het metal and particularly vfor shaping ear wheels and car Wheel tires, and it consists` broadly in expanding a hot or semi-plastic blank, reducing its cross sectional areaf and shaping its outer face by centrifugal action in a Vrotating die or mold.

In the accompanying drawing' Figure 1 is a view in vertical section of an apparatus embodying my invention. Figure 2 is a v ieW in horizontal section takeny through the bearings of shaft 27 and showing one half of the apparatus. Figure 3 is afragmentary section of the table or disk, the cover 14 and the blank after it hasy been shaped-and Figure i is a view in section through the blank andtable.

The main frame 1 of the machine is approximately conical in shape and'is provided with bearings for the moving parts. 2 is a cap resting on the top flange 3 of the main frame 1 and provided with lugs 4 by Which it may be removed and replaced von the frame and With a peripheral flange 5 overhanging the edge of the top flange 3 for holding the cap solidly in position over the Work.

6 is the main vertical spindle or shaft located symmetrical With the main` aXis of frame 1, and mounted at its lower end in the ball bearing 7 carried in bearing 8 at the bottom of main frame `1, and in bearing 9 adjacent to the upper end of said vmain frame. Securely keyed to the upper end of spindle or shaft 6 is vvhich is provided on its upper surface with rooves 11, which radiate from the 'axis of" the disk, andV gradually Widen so that they are somewhat Wider at their outer ends than they are at their inner ends, and both ends of the groove are preferably curved or inclined so as to gradually merge into the surface of the disk. The function of these] grooves is to engage radial lugs 12 on the the table 'orfdisk 10,k

blank 13 to `be manipulated so as to positively cause the blank to rotate with the disk 10, and also 'for holding it centrally With relation to the disk. This disk is provided at its outered'geivith an upwardly pro- Y `i'ecting flange '10CL the'inner face of which' is finished in the form of the outer face of a `Wheel tire or other article to be shaped.

Removably secured to the disk 10 by bayonet joint, is the cover lapreferably provided with a centralfopening the. diameter ofivhichis slightly greater than the diameter of the blank 13 so that the latter may ybe passed through the opening onto the disk,

and provided With holes 15 for the insertion A vent it hfrom flying out of the die or mold When the latter which is composed of the 5' disk 10 andcover 111, is rotating at a high rate of speed.

When it is desired to stop the rotation of the disk after ,the poiver has .beeny vvithA are elevated, thus carrying the brake block y19 -into contact vvith'the under face ofthe disk, which lift the latter slightly and operate bytheir frictional contact te quickly bring the disk to al stop. The plungers 18 V'are eachmount-ed in a cylinder 2O to which pressure, Water or air, is supplied through of -bars or rods for manipulating and han- ',draivn, the plungers 18 only one being shown gearl onthe driven shaft 27, which latter is journalled in bearings carried byy frame 1 and is provided With a drive pulley operated Yby al belt fromv a suitable source of power.

The Whole machine is movably supported on the balls 28 carried by the base ring 29, and is held down on the base by the plates 30, which are mounted at their ends on the bolts 31 and are yieldingly held against the frame 1 by the springs 32, Washers 33 an nuts 34, so as to allovv of a slight oscillation of the Whole of frame lwith reference .y speed of shaft 6 and tol the Vbase, ring 29, due to the high revolving the latter.

The machine shown was designed vfor a" speed of 'approximately 'flour thousand revolutions per minute for' forming thirtyi threeinch diameter tires. VThe blanks are heated to a forging temperature and the e temperature of the blank woulddetermine the speed necessary to form the tire, Ifthe blank be heated above a temperature say two thousand degrees Fahr. the speed could be somewhat less than that above'stated, whereasif the blanks were not so'ehightly heated a greater speed would be required.

In' the operation of my apparatusa ring lshaped blank, Vcast or forged, and at a soft l forging temperature is placed centrally onl Y the disk or table 10, and thelatter is re-k 2O,V

volved at a high rate of speed. The blank is provided on its lower lface with radial lugs 12 placed to conform to the grooves in Y the ldisk or table 10, for holding-the blank the blank will be no in its proper position ,on-the table, and is preferably provided with grooves on .its

uppersurface in the vertical planes of the lugs l2 so that the cross ,sectional area of greater in the vertical planes of the lugs than itis at points intermediate the lugs, and by gradually widening the grooves in which the 'lugs rest, the portions of the blank in the yvertical planes of the lugs will be'free to expand or stretch .equally with the parts of the blanks between the lugs. The'blank revolveswith the disk and the centrifugal force developed causes the ,hot7 or'semiplastic blank to expand. The expansion of the blank reduces its cross sectional area, andthercontact of the outer edge of the blank with the upwardly projecting peripheral flange-l0a of the disk,

.. with the .surface of said ldisk adjacent the peripheral flange., and with the under sidey ofthe cover14;,'iinparts final shape to the periphery of the blank, which in thepresent instance is shown as la `tire 35 yfor a car wheel. This rapid rotation of the blank causes all the particles of the'blankto fly outwardly from the centre thus stretching Ait until it reaches its final shape. Y s It is evident that'm'any changes may be made in the form and construction of apparatus for imparting rotatingrmotion to the. i blank and for holdingthe latter down on the hence I would have lit un- L revolving table,

derstood that pI-vdo not fconne myself to. the details .shown but the parts carried by consider myself at f liberty to make such lchanges as may lfall fing metal parts consisting informing a.

ring shaped blank, heating it to 5a hio'b perature, placing it while hot within a shaping device centrally Y with relation to the axis of the latter, securing itagalnst independent rotation and rapidly rotating theV shaping device-and the blank.V e

3.' In apparatus rfor shaping metal blank by centrifugal action, thecoinbination of a disk mounted to rotate and adaptedto being provided with a peripheral shaping member, and means for preventing inde# pendent rotation of the blanken the-disk.

14k. In apparatus forfshapin'g a highly heated metal blank by centrifugal action, the combination of adisk mountedl to rotate and provided with a peripheral shaping member,` and Vwith a top surface on which` said blank is free to expand, vand vmeans for preventing independent rotation,

of the blank on the'disk.

l 5.I Infapp-aratus for shaping metal blank by centrifugal actioin theV combination of a disk mounted to rotate'and adapted vto n support a highly heated blank, the said disk support a highly heatedblank, and means,y

for preventing independent rotation of the blanken thedisk. Y

A6. In apparatus for shaping metal blanks by centrifugal action, the combination of a table mounted to rotate and highly heated blank., the said table' being provided with a peripheral;shaping mem-V ber,V a'cover detachabiy secured to the table and provided with' jal central openingand of a blank on the table.l

support l afi,v

Vmeans for preventing' independent rotationf In testimony whereof, I have signedthis` specification `in the scribing witnesses." Y

vVlitnesses: I y

N, FnTTERs, vM. G. WisMnR.

presence oftwo sube wiLLikM HENRY Montana@ 

